The wonderful piece of advice that I got from my senior, "know your priorities"..
Once you have desired level of competencies, all that matters is to know your priorities and executing that based on the importance..
Do you go to your kids sports day or make arrangements for a chairman meeting. Do you focus completely on your month-end day sales follow up or take a break to go to your kids parents teachers meeting. How do you prioritize your day to day work and how do you decide what is important. How do you evade the silly urgent matters to the most important ones.
As we grow up, the tasks are plenty, time is limited and all that matters is to know your priorities..